*{
    margin: 0;
    padding: 0;
    list-style: none;
}
.qf:after{
    content: "";
    clear: both;
    display: block;
}
.yi img{
    width: 100%;
}


.er-tou {
    text-align: center;
    padding: 10% 0;
}
.ziti{
    padding: 0 10px;
    font-size: 35px;
    line-height: 10px;
}
.yw{
    font-size: 20px;
}

.er-bei{
    text-align: center;
    height: 800px;
    position: relative;

}
.er-bei ul:nth-child(1){
    position: absolute;
    top: 0%;
    left: 6%;
}
.er-bei ul:nth-child(2){
    position: absolute;
    top: 17%;
    left: 34%;
    z-index: 1;
}
.er-bei ul:nth-child(3){
    position: absolute;
    top: 0%;
    left: 60%;
}
.xiang{
    position: relative;
    top: -7px;
}




.san-div{
    padding-bottom: 10%;

}
.san-ul{
    width: 400px;
    padding: 10% 0;
    margin-left:80px ;
}


.san-ul li{
    padding: 5px 0;
}
.td{
    font-size: 20px;
}
.fan{
    text-align: right;
}


.er-bei .wz2{
   top : 17%!important;
   left :34%!important;
   transition : 1s;
  z-index : 1;
}
.er-bei .wz3{
    top : 0%!important;
    left :60%!important;
    transition : 1s;
    z-index : 0;
}
.er-bei .wz1{
    top : 0%!important;
    left :6%!important;
    transition : 1s;
   z-index : 0;
}
.none{
    display: none;
}

@media (max-width: 780px) {
    .ziti{
        font-size: 25px;
    }
    .yw{
        font-size: 12px;
    }
    .xiang img{
        width: 10%;
    }
    .er-bei{
        width: 100%;
        height: 230px;

    }
    .er-bei img{
        width: 120%;
    }
    .tuqian{
        width: 100%;
    }
    .san-ul{
         margin-left: 0px;
    }
    .san-ul{
     width: 100%;
    }
    .none{
        display: block;
    }
    .bloc{
        display: none;
    }
    .er-tou{
        padding: 0;
    }
    .san,.er{
        padding: 10%;
    }
}
